Home / 211,451.19-291,796.34-120,806.79

Finding the Fourth Proportional to 211,451.19, 291,796.34 and 120,806.79

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Solution

The fourth proportional to 211,451.19, 291,796.34 and 120,806.79 is: 166,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,451.19 : 291,796.34 = 120,806.79 : x
  2. Step 2: Convert to fraction form
    211,451.19/291,796.34 = 120,806.79/x
  3. Step 3: Cross multiply
    211,451.19x = 291,796.34 × 120,806.79
  4. Step 4: Simplify right side
    211,451.19x = 35,250,978,565.11
  5. Step 5: Solve for x
    x = 35,250,978,565.11/211,451.19
  6. Step 6: Final answer
    x = 166,709.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.